Knot clearance, added stretch to the system to avoid the braid breaking from the strike or bending trebles/single hooks, disassociation of the braid from the lure and the advantage of having something that can take the punishment of the GT's teeth and tail scutes.........these are questions that need to be addressed when looking for a leader system IMO.
Out of desperation on a NOMAD trip in March 2001, I devised the twisted leader system for GT's.
It is just a beefed up version of castable wind-on leaders that Rod Harrison made popular in the early 00's.
I was sick of wrecking guide inserts and guide frames from the large knots that we were trying to use.
I could tie a Bimini. I could do a catspaw, so with this in mind, I twisted up heavier leader material to make a castable wind-on leader that had small connections.
Back then, it was all popper fishing as stickbaits had yet to come into this country, so the heavy twisted leader didn't really put any fish off in the rough water spots we liked to pop.
Surge forward 10 years and I'd prefer a single strand leader connected via a friction knot.
This allows for stretchy shock leader to still be employed for it's stretch, though the single strand also allows for a stealthier presentation when using poppers or stick baits.
Whatever system you choose, just learn to tie the knot/s very well!